An information processing system adapted to be worn on the body of a user, the system a module for processing data capable of being worn by a user; and a band secured to the module and adapted to be secured around a part of the user’s body so as to support the module and to allow the user to utilize the module, the band incorporating a battery for powering the module. The pressure pads have transversely spaced, longitudinally-extending slotted nozzles angled towards one another to provide a static pressure area for floating the glass sheet. The at least one transformer is connected to a device for monitoring the discharge process. The entry and exit to the system is controlled by entry and exit barriers. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.